Robust time delay estimation algorithm based on adaptive frequency selection

被引：0
|
作者：
Wan X. [1 ]
Wu Z. [1 ]
机构：
[1] School of Information Science and Engineering, Southeast University
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 05期
关键词：
Adaptive frequency selection; GCC-PHAT(generalized cross correlation approach with phase transform weighting); Microphone array; Time delay estimation;
D O I：
10.3969/j.issn.1001-0505.2010.05.002
中图分类号：
学科分类号：
摘要：
The generalized cross correlation approach with phase transform weighting (GCC-PHAT) is a popular time delay estimation (TDE) algorithm. To enhance the robustness of the GCC-PHAT against noise, an improved TDE algorithm based on adaptive frequency selection is proposed. The signal-to-noise ratio (SNR) of each frequency is calculated from the covariance matrix estimated from the short segments (32ms) of speech, and then the frequencies with high SNR are adaptively selected to estimate the time delay. Simulation results show that the proposed method is more robust against noise compared to the traditional GCC-PHAT method under both medium (reverberation time T60=0.3 s) and high reverberation (T60=0.6 s) conditions.
引用
收藏
页码：890 / 894
页数：4
相关论文
共 11 条
  • [1] Gillette M.D., Silverman H.F., A linear closed-form algorithm for source localization from time-differences of arrival, IEEE Signal Processing Letters, 15, pp. 1-4, (2008)
  • [2] Brandstein M.S., A frame work for speech source location using sensor arrays, (1995)
  • [3] Chen J.D., Benesty J., Huang Y.T., Time delay estimation in room acoustic environments: an overview, EURASIP Journal on Applied Signal Processing, 2006, pp. 1-19, (2006)
  • [4] Time delay estimation techniques in source location, Journal of Data Acquisition & Processing, 22, 1, pp. 90-99, (2007)
  • [5] Knapp C., Carter G., The generalized correlation method for estimation of time delay, IEEE Transactions on Acoustics, Speech, and Signal Processing, 24, 4, pp. 320-327, (1976)
  • [6] Stephenne A., Champagne B., A new cepstral prefiltering technique for estimating time delay under reverberant conditions, Signal Processing, 59, 3, pp. 253-266, (1997)
  • [7] Benesty J., Adaptive eigenvalue decomposition algorithm for passive acoustic source localization, Journal of the Acoustical Society of America, 107, 1, pp. 384-391, (2000)
  • [8] Doclo S., Moonen M., Robust time-delay estimation in highly adverse acoustic environments, IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, pp. 59-62, (2001)
  • [9] Zhang Y., Yin F., Robust time-delay estimation in highly adverse acoustic environments, Journal on Communications, 29, 5, pp. 6-12, (2008)
  • [10] Chen J.F., Ser W., Speech detection using microphone array, Electronics Letters, 36, 2, pp. 181-182, (2000)
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